Call for testing: snapcraft 3.4

@cjp256
OS: friendly core (nanopi-duo2_sd_friendlycore-xenial_4.14_armh based on Ubuntu core)
Kernel package: 4.14.111
Does the kernel config enable CONFIG_SQUASHFS & CONFIG_SQUASHFS_XZ: how to check ?

I can run snaps on it, just cant run the snapcraft from the snap (snapcraft can be run when installed from apt).